Home / 438,810.10-658,215.15-214,314.55

Finding the Fourth Proportional to 438,810.10, 658,215.15 and 214,314.55

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Solution

The fourth proportional to 438,810.10, 658,215.15 and 214,314.55 is: 321,471.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,810.10 : 658,215.15 = 214,314.55 : x
  2. Step 2: Convert to fraction form
    438,810.10/658,215.15 = 214,314.55/x
  3. Step 3: Cross multiply
    438,810.10x = 658,215.15 × 214,314.55
  4. Step 4: Simplify right side
    438,810.10x = 141,065,083,675.43
  5. Step 5: Solve for x
    x = 141,065,083,675.43/438,810.10
  6. Step 6: Final answer
    x = 321,471.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.